Runs rough when tilted

[pitahui]

I have twin 1997 Yamaha T50 4-strokes. When I tilt the starboard engine up, and then later return it to the running position, is runs rough for several minutes and smokes more than usual.<br />The port engine doesn’t exhibit this problem. <br />Any advice would be appreciated.<br />Thanks

 

[rodbolt]

Re: Runs rough when tilted

dont tilt it. problem solved <br /><br /> could be a carb float issue. when tilting the fuel level in the bowl changes. it could be a float or a needle is sticking. its common with carbs and running at tilt angles. they are not designed to run past the trim range.

 

[pitahui]

Re: Runs rough when tilted

Thanks Rodbolt<br /><br />I have to tilt up the engines when going to the sand bar to hang out. After an hour or more, thats when the problem surfaces.

 

[gov2mod]

Re: Runs rough when tilted

It could be water in the fuel bowls on the carbs on that engine. Only a few drops will interfere with the flow of fuel. Try some dry gas additive or remove the drain screw from the carb bowl and drain the fuel from each carb.